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> + my $backing_path = $class->path($scfg, $name, $storeid,
> $backing_snap) if $backing_snap;
>>also, this should probably encode a relative path so that renaming
>>the VG and
>>adapting the storage.cfg entry works without breaking the back
>>reference?
About relative path, I have done test, and if you only specify the
filename|volname, it's already relative to the parent image
qemu-img info /home/store/images/10000/vm-10000-disk-0.qcow2
image: /home/store/images/10000/vm-10000-disk-0.qcow2
backing file: snap-snap4-vm-10000-disk-0.qcow2 (actual path:
/home/store/images/10000/snap-snap4-vm-10000-disk-0.qcow2)
changing to mountpoint:
qemu-img info /home/store2/images/10000/vm-10000-disk-0.qcow2
image: /home/store2/images/10000/vm-10000-disk-0.qcow2
backing file: snap-snap4-vm-10000-disk-0.qcow2 (actual path:
/home/store2/images/10000/snap-snap4-vm-10000-disk-0.qcow2)
with specify a relative path ./
qemu-img info /home/store/images/10000/vm-10000-disk-0.qcow2
image: /home/store/images/10000/vm-10000-disk-0.qcow2
backing file: ./snap-snap4-vm-10000-disk-0.qcow2 (actual path:
/home/store/images/10000/./snap-snap4-vm-10000-disk-0.qcow2)
(same for lvm)
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